A year or two ago a member of CRG sent me the wiring diagrams for the AM/FM stereo radio for my 69 Z28. Well they were lost when my email blew up. If anyone hs the wiring diagrams including anything related to a stereo adapter than connects via a green and a black please forward the information to ktboone@earthlink.net.

Actually both if available. For some reason I'm not getting any signal out of the green wires from the multiplexer. Since it goes to the fader in the radio I believe I can connect the green wires directly to the speakers and should hear the channel if working correctly.